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编辑当前文件:/var/lib/dpkg/info/ufw.preinst

#!/bin/sh -e

if [ "$1" = "upgrade" ] && [ -f /etc/ufw/ufw.conf ]; then
    if dpkg --compare-versions "$2" lt 0.29.1-1 ; then
        level=`grep '^LOGLEVEL=.*' /etc/ufw/ufw.conf | cut -f 2 -d '=' | tr A-Z a-z`
        if [ -z "$level" ]; then
            # Convert old-style logging mechanism to the new. This is
            # primarly useful for Ubuntu 8.04 LTS to Ubuntu 10.04 LTS
            # upgrades, but also will cover some other odd situations.
            if grep -q '^\-A ufw-after-input -m limit --limit 3/min --limit-burst 10 -j LOG --log-prefix "\[UFW BLOCK INPUT\]: "$' /etc/ufw/after.rules ; then
                level="low"
            else
                level="off"
            fi
            echo "# AUTOMATICALLY ADDED ON UPGRADE:" >> /etc/ufw/ufw.conf
            echo "# set to one of 'off', 'low', 'medium', 'high'" >> /etc/ufw/ufw.conf
            echo "LOGLEVEL=$level" >> /etc/ufw/ufw.conf
        fi
    fi
fi

# Automatically added by dh_installdeb/13.6ubuntu1
dpkg-maintscript-helper rm_conffile /etc/init/ufw.conf 0.35-5\~ ufw -- "$@"
dpkg-maintscript-helper rm_conffile /etc/bash_completion.d/ufw 0.34-1\~ ufw -- "$@"
# End automatically added section